ProDOS: How to Convert DOS 3.3 Files

I want to convert DOS ASCII and other formats into ProDOS format. Is there a disk that will convert DOS 3.3 to ProDOS?
The current version of System Utilities 3.1 handles the conversion from DOS 3.3 to ProDOS automatically during a copy. This disk was included with the Apple IIe and IIc Plus.
Published Date: Feb 18, 2012